Well, besides the Soviet mission it mentioned that used tortoises in the past, I suspect the origin of the reference is in regard to the classic saying "It's tu

Well, besides the Soviet mission it mentioned that used tortoises in the past, I suspect the origin of the reference is in regard to the classic saying "It's tutles all the way down" https://en.m.wikipedia.org/wiki/Turtles_all_the_way_down https://en.m.wikipedia.org/wiki/Turtles_all_the_way_down Not positive about that, but that's where my mind went :)